For consumers, maybe, although as my eyes have gotten worse my screens have gotten bigger. But I don't envision 50 million office workers tapping away on their smartphones any time soon (actually, what I *do* see is those 50MM office workers using a only fraction of their desktop PC's, while the "big data" jobs get the rest).

MG Siegler writes: The PC is over. It will linger, but increasingly as a relic. I now dread using my computer. I want to use a tablet most of the time. And increasingly, I can. I want to use a smartphone all the rest of the time. And I do. The value in the desktop web is increasingly an ...